CVE-2020-35474

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

In MediaWiki before 1.35.1, the combination of Html::rawElement and Message::text leads to XSS because the definition of MediaWiki:recentchanges-legend-watchlistexpiry can be changed onwiki so that the output is raw HTML.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-35474

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202101-22

OS impact

OSVersionStatusFixed in
arch archfixed1.35.1-1
debian debianbookwormfixed1:1.35.1-1
debian debianbullseyefixed1:1.35.1-1
debian debianforkyfixed1:1.35.1-1
debian debiansidfixed1:1.35.1-1
debian debiantrixiefixed1:1.35.1-1

References

Verify integrity in audit chain (admin only). AS-IS.